ctunullpointer
ftp://ftp.de.debian.org/debian/pool/main/i/iraf/iraf_2.18.1.orig.tar.gz
head iraf-2.18.1/pkg/cl/pfiles.c:336:24: warning: Null pointer dereference: npf [ctunullpointer]
head iraf-2.18.1/pkg/ecl/pfiles.c:336:24: warning: Null pointer dereference: npf [ctunullpointer]
ftp://ftp.de.debian.org/debian/pool/main/t/tworld/tworld_2.3.0.orig.tar.gz
head tworld-2.3.0/oshw-sdl/sdlout.c:739:16: error: Null pointer dereference: inputcallback [ctunullpointer]